Implement methods to extract urls and fetch labels

.github/scripts/release-notes/process_release_notes.py

@@ -12,6 +12,20 @@ def extract_pr_numbers(line: str) -> List[str]:
     # Match PR numbers from GitHub format (#123)
     return re.findall(r'#(\d+)', line)
 
+def extract_pr_url(line: str) -> List[str]:
+    """Match PR URL from GitHub format https://github.com/foo/bar/pull/123"""
+    return re.findall(r'https://github\.com/[\w-]+/[\w.-]+/pull/\d+', line)
+
+def fetch_labels(github_pr_url: str) -> List[str]:
+    """Fetch labels from a GitHub PR using the GitHub CLI."""
+    result = subprocess.run(
+        ['gh', 'pr', 'view', github_pr_url, '--json', 'labels', '--jq', '.labels[].name'],
+        capture_output=True,
+        text=True,
+        check=True
+    )
+    return [label.strip() for label in result.stdout.strip().split('\n') if label.strip()]
+
 def process_line(line: str) -> str:
     """Process a single line from release notes by removing Jira tickets, conventional commit prefixes and other common patterns.
 

.github/scripts/release-notes/test_process_release_notes.py

@@ -51,6 +51,28 @@ class TestProcessReleaseNotes(unittest.TestCase):
                 result = process_line(input_text)
                 self.assertEqual(result, expected)
 
+    def test_extract_pr_url(self):
+        test_cases = [
+            ("* Update SDK to 1.0.0-3436-2a00b727 by @bw-ghapp[bot] in https://github.com/bitwarden/android/pull/6042", ["https://github.com/bitwarden/android/pull/6042"]),
+            ("* Bump JUnit from 6.0.0 to 6.0.1 by SaintPatrick in https://github.com/bitwarden/android/pull/6149", ["https://github.com/bitwarden/android/pull/6149"]),
+            ("* [PM-26986] Hide select other account button if user has no other account by @aj-rosado in https://github.com/bitwarden/android/pull/6041", ["https://github.com/bitwarden/android/pull/6041"]),
+        ]
+        for input_text, expected in test_cases:
+            with self.subTest(input_text=input_text):
+                result = extract_pr_url(input_text)
+                self.assertEqual(result, expected)
+
+    def test_fetch_labels(self):
+        test_cases = [
+            ("https://github.com/bitwarden/android/pull/6042", ["automated-pr", "t:ci"]),
+            ("https://github.com/bitwarden/android/pull/6149", ["app:authenticator","app:password-manager","t:deps"]),
+            ("https://github.com/bitwarden/android/pull/6041", []),
+        ]
+        for pr_url, expected in test_cases:
+            with self.subTest(pr_url=pr_url):
+                result = fetch_labels(pr_url)
+                self.assertEqual(sorted(result), sorted(expected))
+
     def test_process_file(self):
         content = """
 ### Features: